'A virtual private network (VPN) allows users to access private networks (like the corporate network of your employer) by creating an encrypted “tunnel” across the Internet between the user’s computer and the private network. The encryption ensures that any information shared between the user and the private network is kept safe from prying eyes. It is similar to the encryption between a secure website and your web browser, except it protects all the traffic sent over that network (including things like e-mail, instant messaging, and Skype) and not just web traffic.

A number of service providers are taking this to the next level. They allow users to connect to their networks via a VPN “tunnel”, then access the Internet through their private network.'

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